@article{fdi:010084512,
  title = {{Z}ircon ({U}-{T}h)/{H}e closure temperature lower than apatite thermochronometric systems : reconciliation of a paradox},
  author = {{G}erard, {B}. and {R}obert, {X}avier and {G}rujic, {D}. and {G}autheron, {C}. and {A}udin, {L}aurence and {B}ernet, {M}. and {B}alvay, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}ere, we present seven new zircon ({U}-{T}h)/{H}e ({ZH}e) ages and three new zircon fission track ({ZFT}) ages analyzed from an age-elevation profile ({M}achu {P}icchu, {P}eru). {ZFT} data present ages older than those obtained with other thermochronological data, whereas the {ZH}e data interestingly present ages similar to those obtained with apatite ({U}-{T}h)/{H}e ({AH}e). {I}t has been proposed that {H}e retention in zircon is linked to the damage dose, with an evolution of the closure temperature from low values associated with a low alpha-dose (< 10(16) alpha/g), subsequently increasing before decreasing again at a very high alpha-dose (> 10(18) alpha/g). {S}tudies have focused on {H}e diffusion behavior at high alpha-dose, but little is known at low doses. {W}e propose that the {ZH}e closure temperature at alpha-dose ranging from 6 x 10(15) to 4 x 10(16) alpha/g is in the range of ~60-80 & {DEG};{C}. {T}his value is lower than that proposed in the current damage model {ZRDAAM} and demonstrates that the {ZH}e and {AH}e methods could have similar closure temperatures at low alpha-dose (i.e., similar ages). {T}hese new data strengthen our previous geological conclusions and even highlight a cooling rate approximately twice as important as that deduced from {AH}e and apatite fission track data alone at {M}achu {P}icchu.},
  keywords = {zircon thermochronometry ; a-dose ; ({U}-{T}h)/{H}e ; {A}ndes ; {M}achu {P}icchu ; {PEROU} ; {ANDES} ; {MACHU} {PICCHU}},
  booktitle = {},
  journal = {{M}inerals},
  volume = {12},
  numero = {2},
  pages = {145 [14 ]},
  year = {2022},
  DOI = {10.3390/min12020145},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084512},
}